If you mean oblivious and like a numbskull then I would say: Misaki Ayuzawa from Kaichou wa Maid-sama! and Hikari Hanazono from Special A. I have nothing against those anime series/characters, but they're quite oblivious (:

polx you sound as if you have some sort of grudge against characters made by KEY care to provide a reason?

Well for me I find the whole entire female cast of School Days to be pretty dumb. One has to admit that every single character knows absolutely nothing that is going on around them.

Spoiler Alert! Click to show or hide

They all assume that Sekai was going out with Makoto while he is actually going out with Kotonoha and not only that NEITHER of the two main girls say anything and just let everything escalate. With that said it's also as if networking doesn't even exist even though they all have cell phones (as a matter of fact it plays a significant role in the show despite not being shown often), news about anything revolving around the characters does not spread at all.

Most females in Anime are not really ment to be, y'know smart.
Unless of some main characters, like Rukia from Bleach.
It's the weird appeal they have, that innocent girls is the thing.

That's what totally puts me off rooting for the female characters, I can't relate to them at all. I'm really missing some female personalities with some spunk. Either it's like they are totally dumbstruck or they are too "hardcore", I don't know maybe I haven't seen enough anime but the female spectrum doesn't seem to be that multifarious, the male spectrum on the other hand seems completely numerous and varied.

Ahem, enough with the rambling I see.

I generally liked Vampire Knight to some extent, but at times I wanted to rip off Yuki's head because of her stupidity.